RFI: In criticism of defense in depth

[Fuchs]

I'm looking for military tactical and strategic examples on how to counter defense in depth.

Strategic:
The most promising approach is likely to attack elsewhere; defence in depth usually requires many resources for sufficient strength (else is becomes too porous).

Tactical:
Entice the enemy to switch into a mode that suits you better, such as pursuit.
Alternatively, search for a spot that doesn't allow defence in depth. This usually includes something that should better not be given up (such as a dominating height).